Prior to World War I and the development and widespread adoption of two-way radio that supported voice, wire telephone spelling alphabets were developed to improve communication on low-quality and long-distance telephone circuits. Bell Systems lead the way. In June 1915 the world’s first air-to-ground voice transmission took place at Brooklands (England) over about 20miles (ground-to-airContinue reading “History of Phonetics”
Coos County Radio Club 